rhc124,
Now, there are many others that can be possible issues, but the one that I think is relevant is below. I think it might be it, because the episodes you posted about appear to be transient and intense, rather than increasing over time. So in my laymans opinion, it may be a "Crystal-Induced Arthritis" because of Uric Acid:
Gout and/or Uric Acid:
==============
I think it maybe high Uric Acid. When you have high amounts, Uric Acid forms crystals in joints, rather than being excreted in the urine. Uric Acid is the final oxidation product of purine catabolism, basically metabolic pathways to synthesize and break down purines. Adenosine appears to be one such purine, and it appears that a relationship may exist between Uric Acid and Plasma Adenosine Levels, at least in one study with women with preeclampsia: http://content.karge...e.asp?Doi=52918
Very interesting! I wonder if anyone has first hand experience using Cherries to reduce uric acid?
(I've heard this many times but have no direct experience with it)
Jacob, Robert A., et al. June, 2003 Consumption of Cherries Lowers Plasma Urate in Healthy Women. Journal of Nutrition 133, pp 1826–1829.